The Echo Icon Theme is an icon set created by the Fedora team to be used as the default Gnome Desktop icons for a Fedora Linux installation. This post will show you how to download these icons and install them on an Ubuntu system.

First we'll create a download directory and then download the icon archive. Open and terminal window and enter:

You can now select the icons by customizing your theme. Go to System->Preferences->Appearance. Click on Customize. Select the Icons tab in the new window. Select Echo from the list and click Close. Close the Appearance Preferences window.

Edit 26-MAR-09: As one commenter pointed out, Echo is not the default icon theme in Fedora 10. Fedora 10 uses a modified version of the Mist icons. Mist should already be available by default in your Ubuntu installation.